The magnetic field of Saturn - Further studies of the Pioneer 11 observations

Details The magnetic field of Saturn - Further studies of the Pioneer 11 observations The magnetic field of Saturn - Further studies of the Pioneer 11 observations

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.5675a&link_type=abstract

Journal of Geophysical Research, vol. 85, Nov. 1, 1980, p. 5675-5678.

Physics

7

Magnetic Measurement, Planetary Magnetic Fields, Planetary Magnetospheres, Saturn (Planet), Current Sheets, Magnetic Dipoles, Magnetopause, Magnetosheath, Pioneer 11 Space Probe, Saturn, Pioneer 11, Magnetic Fields, Analysis, Fluxgate Magnetometer, Magnetopause, Equipment, Observations, Dipole, Comparisons, Emissions

Scientific paper

Analysis of magnetic field observations by the Goddard Space Flight Center high-field flux gate magnetometer on the Pioneer 11 spacecraft during Saturn encounter yields estimates of the planetary field. The field is mainly dipolar but rather weaker than expected, with a moment equal to 0.20 G cubic Saturn radii or 4.3 x 10 to the 28th G cu cm, opposite in polarity to earth's. Surprisingly, the field appears to be axially symmetric but with a small (0.04 Saturn radii) offset to the north so that N (S) polar field intensities are 0.6 (0.4) G, respectively. The deduced polar offset appears not to be an artifact of the limited spatial extent of the observations or the presence of fields of external origin. The average stand-off distance of the magnetopause is expected to be 20 Saturn radii, i.e., at the orbit of Titan, so that this largest of solar system satellites is immersed not only in the Saturnian magnetosphere but also at times in its magnetosheath and sometimes even in the interplanetary medium.

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